Of Bounces, Branes and Bounds

Abstract

Some recent studies have considered a Randall-Sundrum-like brane world evolving in the background of an anti-de Sitter Reissner-Nordstrom black hole. For this scenario, it has been shown that, when the bulk charge is non-vanishing, a singularity-free ``bounce'' universe will always be obtained. However, for the physically relevant case of a de Sitter brane world, we have recently argued that, from a holographic (c-theorem) perspective, such brane worlds may not be physically viable. In the current paper, we reconsider the validity of such models by appealing to the so-called ``causal entropy bound''. In this framework, a paradoxical outcome is obtained: these brane worlds are indeed holographically viable, provided that the bulk charge is not too small. We go on to argue that this new finding is likely the more reliable one.

15 pages, Revtex; references added and very minor changes

References in corpus (4)

• The Covariant Entropy Bound, Brane Cosmology, and the Null Energy Condition
• Extensive Entropy Bounds
• Bad News on the Brane
• Big Bangs and Bounces on the Brane

Cited by in corpus (8)

• Quintom Cosmology: Theoretical implications and observations
• Bouncing Braneworlds Go Crunch!
• Bouncing Cosmologies and Self-Gravitational Corrections
• Bouncing pre-big bang on the brane
• The Self-Gravitational Corrections as the Source for Stiff Matter on the Brane in $SAd{S}_5$ Bulk
• Bouncing Universe with Non-minimally Coupled Quintom Matter
• Bouncing cosmological solutions due to the self-gravitational corrections and their stability
• Anatomy of a Bounce